There are strong arguments favoring a four-quark interpretation of sub-GeV light scalar mesons and the diquark-antidiquark body-plan of the tetraquark seems to provide the most convincing picture. The building diquarks of these particles are assumed to be spin zero objects. In this Letter we explore the possibility that radially excited aggregations of spin zero or spin one diquarks might exist and discuss the possibility of the Y (2175) state observed by BaBar and confirmed by BES being one such state. © 2008 Elsevier B.V. All rights reserved.
Higher tetraquark particles / Drenska, NADEJDA VASSILEVA; Faccini, Riccardo; Polosa, ANTONIO DAVIDE. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 669:2(2008), pp. 160-166. [10.1016/j.physletb.2008.09.038]
Higher tetraquark particles
DRENSKA, NADEJDA VASSILEVA;FACCINI, Riccardo;POLOSA, ANTONIO DAVIDE
2008
Abstract
There are strong arguments favoring a four-quark interpretation of sub-GeV light scalar mesons and the diquark-antidiquark body-plan of the tetraquark seems to provide the most convincing picture. The building diquarks of these particles are assumed to be spin zero objects. In this Letter we explore the possibility that radially excited aggregations of spin zero or spin one diquarks might exist and discuss the possibility of the Y (2175) state observed by BaBar and confirmed by BES being one such state. © 2008 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
